Add kokoro-columbia

Change-Id: I6f54444f891acacf02e87e03935729dd07e5e10a
diff --git a/columbia.xml b/columbia.xml
index 0ea47a5..07464f8 100644
--- a/columbia.xml
+++ b/columbia.xml
@@ -90,5 +90,7 @@
     <project name="imx-vpuwrap-debian" path="packages/imx-vpuwrap"
       groups="notdefault,internal" remote="coral-internal" />
 
+    <project name="kokoro-columbia" path="kokoro"
+      groups="notdefault,internal" remote="coral-internal" />
     <!-- END closed source repositories -->
 </manifest>